Fireless cooker.



PA'TENTBD IJULY z3, 41.907.

Gl Wl REYNOLDS `PIRBLESSy 000mm APPLICATION PILE) JUNE 16,

PATENT' OFFICE.

CLIFFORD W.'REYNOIJDS, OF OMAHA, NEBRASKA.

FIRELESS OOOKER.

Specification of Letters Patent.

Patented July 23, 1907.

Application filed June 16,1906. Serial No. 322,061.

To all whom it may concern: i Be it lmown that I, CLIFFORD W. REYNoLDs,a citizen l of the United States, residing at Omaha, in the county ofDouglas and State of Nebraska, have invented certain new and usefulImprovements in Fireless Cookers, of which the following is aspecification.

My invention relates in general to a heat retaining device whereby anarticle may be placed in a receptacle and remain for a considerablelength of time at practically the same temperature as when firstdeposited in the containing chamberl therein. Some of the advantages ofmy device being that a meal may be prepared vmany hours before it is tobe served and kept in proper condition, or in case'of articles requiringslow and continued cooking `they are rst heated to a suiicient cookingtemperature and then placed in the containing chamber whereupon theyproceed to cook without any further heat being applied. Nor is myinvention applicable alone toretaining heat as it is so insulated that acold substance may be `placed therein and preserved equally as well as aheated substance;

' and in particular my invention pertains to the peculiar arrangement ofthe parts whereby all heat within the receptacle is directed towardthecontaining chamber while the exterior atmosphere is practicallyexcluded.

my device with a portion of the cushion broken away f and Fig. 2 is across-section on the line 2-2 of Fig. 1.

Referring more particularly to thevdrawing, 3 represents the outer wallof the receptacle, preferably ciry cular, constructed of galvanized ironand provided with a double seamed bottom 4 that is soldered at theseams.

thereto, lwhile the wall oi said casing 5' converges I downwardly tocrowd' the heat as it rises in theconfined air space formed between thetwo casings. The containing chamber 9 is provided with a double seamed-bottom 10, similar to the bottoms 4 and '6, and separated from the'casing 5 by a collar 11, the outer edge of which is seated in a bead 12in the inner casing, and its inner edge turned with the top ofthecontaining chamber, as

`shown at 13, about the wire 14, both edges being sol dered thereto, andthe outer edge of the collar meeting the' inner casing at a point belowits inner edge, where it is connected to the containing chamber, for areason hereinafter explained.v

Confined between the wall of the inner casing, containing chamber andcollar is the filling-or insulation 15 preferably composed of magnesiaplasticcement, mineral wool or similar llings containing air cells.

16 is a cover to the containing chamber and is provided .the cover aninsulation 20 that is preferably composed of the same material as theinsulation 15.

The pillow or cushion 2 1 is lled with magncsia plastic cement, 22,mineral wool or the like and rests, upon the dome ofthe inner cover andcollar, falling below the top of the containing chamber and therebypreventing the escapement of any air that might leak out around thecover. The cover 23 of the whole dcvice is constructed similar to theVcover 16 only some# what larger to fit the duter casing and is hereinshown. as having a coniined air space between the walls instead o afilling.

Two of they salient features of my device lie in th k converging wall ofthe inner casing and the angle at which the collar is disposed. Theconverging Wall' permits oi a loose filling to be used, since itprevents the packing or settling of the same, which would destroy thesmall air cells therein and considerably diminish the efiiciency oi thedevice, and it also serves to deflect the heat towards the containingchamber.v

The collar being disposed at an angle aids to deflect. the heat, as itrises, toward the containing chamber, and, furthermore, permits thecushion to be seated below the. top of the containing chamber, thus con.

ining more securely the atmosphere therein.

It isobvious that the precise arrangement of the parts is immaterial,and therefore without limiting myself to the details of constructionherein described and shown what I claim is:

I claim:

1. `A reiess cooker comprising an outer casing, an inner casing having adownwardly converging wail, a fixed containing chamber, a confined airspace between said easings, a filling substance between said innercasing and said containing chamber, and a cover for said outer casing,substantially as described.

2. A reless cooker comprising an outer casing, an inner casing havingdownwardly converging sides, a permanently situated containing chamberwithin said inner casing, a collar disposed at an angle, and a. fillingarranged between said inner casing and said containing chamber, aconiined air space between said outer and -inner casings, and a coverfor said outer casing, substantially as described.

3. A ireless cooker comprising an outer casing provided with a cover, aninner casing having downwardly converging sides, a containing chamberprovided with a cover, a downwardly sianting collar secured to saidcontaining a collar disposed downwardly and arranged between said innercasing,r and containing chamber. a `cover for said outer casing and forsaid containing chamber, and a non- Conductingr substance arrangedbetween said covers, snbstantially as described.

vhnmher and set in a bead in said inner casing, a filling containingair.' cells between said inner casing and containing chamber. a confinedair space between said outer rand inner casings, and an insulationarranged between said I covers, substantially as described.

q1. A reless cooker comprising an outer and an inner casing-securedtogether at their tops, said inner casing provided with downwardlyconverging sides, a containing ehnmber within said inner easing, afilling substance and CLIFFORD W. REYNOLDS.

Witnesses: r

Bm'cn CRAWFORD,

WM. O. GILBERT.

